Stirring device for a kettle suitable for automatic feeding

Abstract

The utility model relates to a kind of stirring device suitable for automatic feeding of kettle, built-in in stirred tank, including composite paddle group, the material equalizing disc of composite paddle group is located close to the one side of stirred tank feed inlet, flow guide groove is set on material equalizing disc, material flows through the flow guide groove of material equalizing disc and falls into stirred tank, composite paddle group includes: stirring main shaft, horizontal paddle, connect on stirring main shaft, vertical paddle, connect on the end of horizontal paddle away from stirring main shaft, and form three-blade anchor type stirring frame with horizontal paddle, scraper group, set at horizontal paddle, vertical paddle, screw strip paddle, connect on vertical paddle, with stirring frame outer contour plane coplanar.The composite design of screw strip paddle and anchor type paddle in the application, material can be more evenly stirred in the four around and up and down of kettle, effectively prevent the deposition of material;Flow guide groove is used to slow down the feeding speed, reduce the bubble contained in material.

Description

Technical Field

[0001] This utility model relates to the field of stirring device technology, and in particular to a stirring device for a kettle suitable for automatic feeding. Background Technology

[0002] Currently, material handling in the fine chemical industry is developing towards automation, with main modules including automatic metering, automatic batching, automatic feeding, mixing and stirring, and automatic discharging.

[0003] Automatic feeding systems typically connect to mixing equipment via pipelines, feeding liquids, powders, and powder-liquid premixes into the mixing equipment for mixing. During this process, when powders or liquids enter the mixing equipment, the fixed position of the feeding port and its relatively high distance from the bottom of the vessel often lead to problems such as material accumulation and splashing. This reduces mixing efficiency, generates excess air bubbles in the material, and affects the quality of the final product. Utility Model Content

[0004] To address the shortcomings of existing production technologies, the applicant provides a stirring device for automatic feeding reactors. By adding a material distribution ring, it effectively reduces material accumulation and splashing that generates bubbles during the feeding process. The combined design of the anchor paddle and screw improves the stirring efficiency of materials within the container.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A stirring device for an automatic feeding vessel, built into a mixing vessel, includes a composite blade assembly and a material distribution plate located on the side of the composite blade assembly near the feed inlet of the mixing vessel. The material distribution plate is equipped with a guide channel, through which the material flows into the mixing vessel.

[0007] The composite blade assembly includes:

[0008] Mixing spindle,

[0009] Horizontal blades are connected to the mixing shaft.

[0010] The vertical blade is connected to the end of the horizontal blade that is away from the mixing shaft, forming a three-bladed anchor-type mixing frame with the horizontal blade.

[0011] The scraper assembly is located at both the horizontal and vertical blades.

[0012] The screw blades are connected to the vertical blades and are coplanar with the outer contour surface of the stirring frame.

[0013] As a further improvement to the above technical solution:

[0014] Both the horizontal and vertical blades adopt a prismatic structure.

[0015] The scraper assembly includes a side scraper and a bottom scraper, both of which are arranged in the same direction on the mixing frame.

[0016] The side scraper is mounted on the vertical blade and is angled from the vertical blade toward the side wall of the mixing vessel.

[0017] The bottom scraper is set on the horizontal blade, and the bottom scraper is inclined from the horizontal blade toward the bottom wall of the mixing vessel.

[0018] The screw blade is positioned between two adjacent vertical blades, and the two ends of the screw blade are connected to the top and bottom ends of the two adjacent vertical blades, respectively.

[0019] The material distribution tray and the mixing frame move together, with the guide groove of the material distribution tray facing the vertical blade.

[0020] The width of the guide channel opening is smaller than the width of the vertical blade edge opposite the opening.

[0021] The material distribution tray has a material-bearing surface, which is an inclined surface.

[0022] The mixing vessel containing the mixing device is equipped with a feeding pipe. The end of the feeding pipe facing the equalization plate is a wedge, which is parallel to the material receiving surface.

[0023] The beneficial effects of this utility model are as follows:

[0024] The material distribution ring design in this application allows the material to be more evenly distributed around the vessel as it rotates slowly during continuous feeding in the mixing equipment. Simultaneously, the guide channels in the material distribution plate allow liquid to enter the vessel slowly, preventing splashing and reducing the generation of air bubbles in the material.

[0025] The combined design of ribbon blades and anchor blades allows for more uniform mixing of materials around the vessel and from top to bottom, improving mixing efficiency and effectively preventing material sedimentation. Attached Figure Description

[0026] Figure 1 This is the main view of the overall structure of this application.

[0027] Figure 2 This is a top view of the overall structure of this application.

[0028] Figure 3 This is a perspective view of the composite blade assembly of this application.

[0029] Figure 4 This is a perspective view of the material distribution tray in this application.

[0030] The components include: 1. Composite blade assembly; 2. Material distribution plate; 3. Feeding pipe;

[0031] 201. Flow guide channel; 202. Material receiving surface;

[0032] 101. Stirring shaft; 102. Horizontal blade; 103. Vertical blade; 104. Spiral blade; 105. Side scraper; 106. Bottom scraper;

[0033] 301. Wedge. Detailed Implementation

[0034] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0035] like Figures 1-4 As shown, the automatic feeding stirring device for a reactor in this embodiment is built into a stirring vessel and includes a composite blade assembly 1 and a material distribution plate 2 located on the side of the composite blade assembly 1 near the feed inlet of the stirring vessel. The material distribution plate 2 is provided with a guide channel 201, through which the material flows into the stirring vessel.

[0036] Composite blade assembly 1 includes:

[0037] Stirring spindle 101,

[0038] Horizontal blade 102 is connected to the stirring main shaft 101.

[0039] The vertical blade 103 is connected to the end of the horizontal blade 102 that is away from the mixing shaft 101, forming a three-bladed anchor-type mixing frame with the horizontal blade 102.

[0040] The scraper assembly is located at the horizontal blade 102 and the vertical blade 103.

[0041] The screw blade 104 is connected to the vertical blade 103 and is coplanar with the outer contour surface of the stirring frame.

[0042] Both the horizontal blade 102 and the vertical blade 103 adopt a prism structure.

[0043] The scraper assembly includes a side scraper 105 and a bottom scraper 106, both of which are arranged in the same direction on the mixing frame.

[0044] The side scraper 105 is mounted on the vertical blade 103 and is inclined from the vertical blade 103 toward the side wall of the mixing vessel.

[0045] The bottom scraper 106 is mounted on the horizontal blade 102 and is inclined from the horizontal blade 102 toward the bottom wall of the mixing vessel.

[0046] The screw blade 104 is disposed between two adjacent vertical blades 103, and the two ends of the screw blade 104 are respectively connected to the top and bottom ends of the two adjacent vertical blades 103.

[0047] The material distribution plate 2 moves with the stirring frame, and the opening of the guide groove 201 of the material distribution plate 2 faces the vertical blade 103.

[0048] The width of the guide channel 201 is smaller than the width of the edge of the vertical blade 103 opposite to the channel opening.

[0049] The material distribution plate 2 has a material support surface 202, which is an inclined surface.

[0050] The mixing vessel containing the mixing device is equipped with a feeding pipe 3. The end of the feeding pipe 3 facing the equalization plate 2 is a wedge 301, which is parallel to the material receiving surface 202.

[0051] The specific structure and working principle of this application are as follows:

[0052] To address the issues of material accumulation and air bubbles that occur when powders and liquids are automatically fed into mixing equipment, this invention provides a mixing device for automatic feeding reactors, which effectively solves the problems of material accumulation and air bubble generation during the feeding stage.

[0053] The stirring device is built into the stirring vessel, such as Figure 1 As shown, it includes a stirring spindle connected to an external transmission box, a composite blade assembly 1 connected to the stirring spindle, and a vacuum cover.

[0054] like Figure 1 and Figure 3 As shown, the composite blade assembly 1 includes horizontal blades 102, vertical blades 103, and screw blades 104. The horizontal blades 102 extend outwards from the bottom of the mixing shaft in a circumferential array. Each horizontal blade 102 has a vertical blade 103 connected to its end facing away from the mixing shaft. The horizontal blades 102 and vertical blades 103 are rotationally symmetrical about the mixing shaft. A distribution plate 2 is installed on the top of the vertical blades 103. The horizontal blades 102 and vertical blades 103 form a three-blade anchor-type mixing frame, and the distribution plate 2 seals the top of the three-blade anchor-type mixing frame.

[0055] The horizontal blade 102 and the vertical blade 103 are made of triangular rods, which can withstand a large stirring torque when the blades are rotating.

[0056] Reference Figure 2 , Figure 3 Bottom scraper 106 and side scraper 105 are alternately distributed on the horizontal blade 102 and the vertical blade 103. The two types of scrapers are installed on the lugs of the corresponding blades by pins and are fixed with cotter pins to prevent them from falling off. The bottom scraper 106 is connected to the horizontal blade 102, and the side scraper 105 is connected to the vertical blade 103.

[0057] Bottom scraper 106 and side scraper 105 are staggered on the horizontal blade 102 and the vertical blade 103. The scrapers are mounted on the blade lugs by pins and secured with cotter pins to prevent them from falling off. The plane of the scraper and the inclined surface of the triangular bar form a mechanical limit, allowing the scraper to rotate freely about 25° around the center of the pin without jamming during stirring.

[0058] In this embodiment, all scrapers are made of polytetrafluoroethylene, which has excellent friction coefficient and self-lubricating properties. The number of scrapers is distributed so that the blades can fully cover the inner wall of the container when rotating. For containers with special irregular shapes, the bottom scrapers can be ground according to the curvature of the container so that the scrapers can stick to the inner wall of the container when working and play the role of scraping material.

[0059] Reference Figure 1 Between two adjacent vertical blades 103, a threaded blade 104 is welded to the vertical blade 103 of the anchor frame, and both ends of the threaded blade 104 are connected to the top end of one vertical blade 103 and the bottom end of another vertical blade 103, respectively. The outer diameter of the threaded blade 104 is consistent with the outer diameter of the anchored stirring frame.

[0060] The 104 screw blade is particularly suitable for stirring high-viscosity materials. Depending on the direction of rotation, it can cause the material in the vessel to be turned up or down, while the material in the center of the vessel will rise or fall accordingly, thus forming a stirring of the entire vessel.

[0061] The annular material distribution plate 2, installed at the top of the three-leaf anchor frame, is fixed to the top of the anchor mixing frame by bolts. When the entire composite blade assembly 1 rotates slowly, the material distribution plate 2 rotates together with the composite blade assembly 1.

[0062] The structure of the equalization plate 2 is as follows Figure 4 As shown, it has a ring-shaped conical surface with a cone angle of β; referring to the reference... Figure 1 The vacuum cover is equipped with a feeding port, which is connected to the automatic feeding system via a pipe.

[0063] The sum of the cone angle β and the slope angle α of the wedge opening 301 of the feeding pipe 3 is 90°. As a specific set of optional parameters, β = 65° and α = 25° are set here. This ensures the relative parallelism of the two planes. When the material enters the mixing equipment from the automatic feeding system, it will briefly adhere to the equalization plate 2. As the equalization plate 2 rotates, it will flow evenly into the tank through the guide groove 201 on the equalization plate 2.

[0064] like Figure 1As shown, the width L1 of the guide groove 201 on the equalization plate 2 is smaller than the width L2 of the straight side of the triangular bar of the vertical blade 103. Here, L1 = 35mm and L2 = 40mm are set. This structure effectively avoids material accumulation on the feeding side of the vessel wall during feeding, reduces material splashing, and prevents excessive bubble generation.

[0065] The advantage of this application lies in the fact that the annular conical material distribution plate 2 buffers the speed of the added material, and the guide channel 201 allows the material to flow into the reactor along the anchor frame, effectively preventing splashing. The distribution plate 2 rotates together with the impeller, which also helps to evenly distribute the added material and prevents accumulation during feeding. The combined design of the ribbon impeller and the anchor impeller effectively improves the stirring efficiency and prevents material sedimentation. By adopting the above technical means, the quality problems of air bubbles in the material and the stirring efficiency problems are solved.

[0066] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A stirring device for a reactor suitable for automatic feeding, characterized in that: Built into the mixing vessel, it includes a composite blade assembly (1) and a material distribution plate (2) located on the side of the composite blade assembly (1) near the feed inlet of the mixing vessel. The material distribution plate (2) is provided with a guide groove (201). The material flows through the guide groove (201) of the material distribution plate (2) and falls into the mixing vessel. The composite blade assembly (1) includes: Stirring spindle (101), Horizontal blades (102) are connected to the stirring shaft (101). A vertical blade (103) is connected to the end of a horizontal blade (102) that is away from the mixing shaft (101), forming a three-bladed anchor-type mixing frame with the horizontal blade (102). The scraper assembly is located at the horizontal blade (102) and the vertical blade (103). The screw blade (104) is connected to the vertical blade (103) and is coplanar with the outer contour surface of the stirring frame.

2. The stirring device for an automatic feeding reactor as described in claim 1, characterized in that: Both the horizontal blade (102) and the vertical blade (103) adopt a prismatic structure.

3. The stirring device for an automatic feeding reactor as described in claim 1, characterized in that: The scraper assembly includes a side scraper (105) and a bottom scraper (106), both of which are arranged in the same direction on the mixing frame.

4. The stirring device for an automatic feeding reactor as described in claim 3, characterized in that: The side scraper (105) is set on the vertical blade (103) and the side scraper (105) is inclined from the vertical blade (103) toward the side wall of the mixing vessel.

5. The stirring device for an automatic feeding reactor as described in claim 3, characterized in that: The bottom scraper (106) is set on the horizontal blade (102), and the bottom scraper (106) is inclined from the horizontal blade (102) toward the bottom wall of the mixing vessel.

6. The stirring device for an automatic feeding reactor as described in claim 1, characterized in that: The screw blade (104) is disposed between two adjacent vertical blades (103), and the two ends of the screw blade (104) are respectively connected to the top and bottom ends of the two adjacent vertical blades (103).

7. The stirring device for an automatic feeding reactor as described in claim 1, characterized in that: The material distribution plate (2) moves with the stirring frame, and the opening of the guide groove (201) of the material distribution plate (2) faces the vertical blade (103).

8. The stirring device for an automatic feeding reactor as described in claim 7, characterized in that: The width of the guide groove (201) is smaller than the width of the edge of the vertical blade (103) opposite to the groove.

9. The stirring device for an automatic feeding reactor as described in claim 1, characterized in that: The material distribution plate (2) has a material receiving surface (202), which is an inclined surface.

10. The stirring device for an automatic feeding reactor as described in claim 9, characterized in that: The mixing vessel containing the mixing device is equipped with a feeding pipe (3). The end of the feeding pipe (3) facing the equalization plate (2) is a wedge (301), and the wedge (301) is parallel to the material receiving surface (202).

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